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In situ coal gasification (Patent) OSTI.GOV

A process and apparatus are provided for converting particulate carbonaceous fuel, such as high-sulfur bituminous coal, into a combustible gas, the process comprising forming an ignited fluidized bed of said particulate carbonaceous fuel in a closed-bottom shaft furnace, the shaft furnace having a roof enclosure, directing a jet stream of oxygen downward into the bottom zone of said ignited fluidized bed of

Process for in situ coal gasification Ramcor, Inc.

In situ coal gasification to form a methane rich gas is carried out by injecting a lower aliphatic alcohol such as methanol into a coal seam, raising the temperature to cause dissociation of the alcohol and injecting water into the same. Nascent hydrogen is produced which reacts with the coal to form methane.

In-Situ Processes: Underground Coal Gasification

Abstract. The idea of recovering the energy values of coal by in-situ processes, without the intervention of human effort below ground and without bringing waste to the surface, is one which has exceptional appeal to the public. For this reason alone, a careful analysis of the possibilities is desirable, regularly renewed in the light of developing technology and changing energy economics.

IN-SITU GASIFICATION, ENHANCED METHANE

2019-3-12  IN-SITU COAL GASIFICATION Gasification Principles and Reactions Coal gasification is a process for the conversion of coal to combustible gases. Coal is reacted with air or oxygen and steam, to yield a gaseous product consisting mainly of CO, CO 2, H2, CH4, trace gases of sulphur and nitrogen bearing compounds and ash residue [13].

In-Situ Coal Gasification: Model Calculations and

One concept for in-situ coal gasification involves fracturing thick, deep, coal seams using chemical explosives. The resultant high-permeability zone then would be ignited and reacted with a steam/ oxygen mixture to produce medium-Btu gas suitable for upgrading to pipeline quality in a surface plant.

Remote monitoring of an in situ coal gasification

Sandia Laboratories fielded a comprehensive instrumentation effort on the Hanna II in situ coal gasification experiment conducted by the Laramie Energy Research Center (LERC) in 1975-76. Instrumentation included temperature, electrical and seismic arrays designed to provide diagnostic information as well as to develop a remote monitoring capability to continuously map the in situ process.

In Situ Gasification (ISG) LCKE

2020-9-10  in situ gasification (ISG) project sits within the Telford Basin of the Leigh Creek Coalfield. ISG is also known as underground coal gasification (UCG), however the terms ‘in situ gasification’ or ‘ISG’ are used in South Australia’s . Petroleum and Geothermal Energy Act 2000. to describe the process. The Telford Basin. MAIN SERIES OVERBURDEN

Coal Gasification an overview ScienceDirect Topics

This process, known as in situ or underground gasification, typically involves drilling boreholes to intersect the seam in at least two places, and providing a passage for gas through the seam from one intersection to the other. The coal is ignited at the base of one hole and a gasification agent, such as steam or compressed air, injected into the seam.

In-situ gasification and coal conversion Department

2021-6-8  Underground coal gasification (UCG) also known as in-situ gasification (ISG) of coal takes place underground, generally below approximately 370 m.

In-situ decoupling effect of H2O on the whole process

2020-1-1  There are relatively few studies on the effect of H 2 O on the devolatilization of raw coal during gasification. It is necessary to study the in-situ decoupling mechanism of H 2 O on the whole process of raw coal-H 2 O gasification reaction. Micro fluidized bed reaction analyzer (MFBRA) can realize the rapid gasification reaction of coal and on-line gas concentration detection.

In-Situ Coal Gasification: Model Calculations and

The major products of the over-all process include H2, CO, CH4, and CO2 as gases, process include H2, CO, CH4, and CO2 as gases, and water and tar as liquids. Mathematical modeling and laboratory experimentation have been carried out to increase understanding of the important parameters of the in-situ gasification process.

In Situ Gasification (ISG) LCKE

2020-9-10  in situ gasification (ISG) project sits within the Telford Basin of the Leigh Creek Coalfield. ISG is also known as underground coal gasification (UCG), however the terms ‘in situ gasification’ or ‘ISG’ are used in South Australia’s . Petroleum and Geothermal Energy Act 2000. to describe the process. The Telford Basin. MAIN SERIES

In-Situ Coal Gasification: Status of Technology and

58 A-6 Hanna III Well Pattern 63 B-l LLL In-Situ Coal Gasification Concept 84 B-2 Block Diagram of LLL In-Situ Coal Gasification Process 85 B-3 Sorption Isotherm for Soluble Organic Components from Coal Tar on Subbituminous Coal 94 B-4 Sorption Isotherm for Ca Ions on Subbituminous Coal 95 B-5 Location of Hoe Creek Test Site 103 B-6

In-Situ Processes: Underground Coal Gasification

Abstract. The idea of recovering the energy values of coal by in-situ processes, without the intervention of human effort below ground and without bringing waste to the surface, is one which has exceptional appeal to the public. For this reason alone, a careful analysis of the possibilities is desirable, regularly renewed in the light of developing technology and changing energy economics.

IN-SITU GASIFICATION, ENHANCED METHANE

2019-3-12  IN-SITU COAL GASIFICATION Gasification Principles and Reactions Coal gasification is a process for the conversion of coal to combustible gases. Coal is reacted with air or oxygen and steam, to yield a gaseous product consisting mainly of CO, CO 2, H2, CH4, trace gases of sulphur and nitrogen bearing compounds and ash residue [13].

In-situ gasification and coal conversion Department

2021-6-8  Underground coal gasification (UCG) also known as in-situ gasification (ISG) of coal takes place underground, generally below approximately 370 m. The underground setting provides both the coal feedstock source as well as pressures comparable to that in an above-ground gasifier, and at a depth less attractive for mining owing to the cost to

One-dimensional model for in situ coal gasification

This report presents a calculational model that describes certain aspects of the in situ gasification process. The primary aim of this preliminary work was to predict and correlate reaction and thermal-front propagation rates and product-gas composition as a function of coal bed properties and process operating conditions. We restricted initial efforts to a one-dimensional transient Darcy flow

Method for in situ coal gasification operations

An in situ coal gasification process adapted for large scale commercial projects is provided. Techniques are provided to insure establishment of a gasification front over the full seam thickness as each successive injection well in the array is brought on line. This is accomplished by controlling the oxidant introduction in a prescribed manner

LLL in-situ coal gasification program NASA/ADS

Potential advantages of in-situ (underground) coal gasification are that the product may be cheaper because of lower capital investment, environmental damage is likely to be lower, and it may be possible to exploit coal resources found at depths too great to be economically attractive for conventional strip- or deep-mining operations. Results are presented for a successful deep exploratory

Coal gasification coal processing Britannica

Coal gasification, any process of converting coal into gas for use in illuminating and heating. The first illuminating gas was manufactured from coal in England in the late 18th century by the process of carbonization or destructive distillation, heating coal in the absence of

In-Situ Processes: Underground Coal Gasification

Abstract. The idea of recovering the energy values of coal by in-situ processes, without the intervention of human effort below ground and without bringing waste to the surface, is one which has exceptional appeal to the public. For this reason alone, a careful analysis of the possibilities is desirable, regularly renewed in the light of developing technology and changing energy economics.

IN-SITU GASIFICATION, ENHANCED METHANE

2019-3-12  IN-SITU COAL GASIFICATION Gasification Principles and Reactions Coal gasification is a process for the conversion of coal to combustible gases. Coal is reacted with air or oxygen and steam, to yield a gaseous product consisting mainly of CO, CO 2, H2, CH4, trace gases of sulphur and nitrogen bearing compounds and ash residue [13].

In-Situ CO Capture Coal Gasification (HyPr-RING Process) 2

2013-9-27  In-Situ CO. 2. Capture Coal Gasification (HyPr-RING Process) Japan Coal Energy Center. Japan-Taiwan CCT Information Exchange Workshop 2009. 27 July, 2009. Shinagawa Prince Hotel, Japan. Japan: Reference 4

In-situ gasification and coal conversion Department

2021-6-8  Underground coal gasification (UCG) also known as in-situ gasification (ISG) of coal takes place underground, generally below approximately 370 m. The underground setting provides both the coal feedstock source as well as pressures comparable to that in an above-ground gasifier, and at a depth less attractive for mining owing to the cost to

LLL in-situ coal gasification program NASA/ADS

Potential advantages of in-situ (underground) coal gasification are that the product may be cheaper because of lower capital investment, environmental damage is likely to be lower, and it may be possible to exploit coal resources found at depths too great to be economically attractive for conventional strip- or deep-mining operations. Results are presented for a successful deep exploratory

Leigh Creek Energy in-situ gasification Department

2021-7-5  Leigh Creek Energy plans to produce energy from coal using a process known as underground coal gasification (UCG), also known as In-situ Gasification (ISG). The UCG process converts coal from its solid state into a gaseous form, resulting in the generation of synthesis gas (syngas) containing methane, hydrogen and other components.

UNDERGROUND COAL GASIFICATION: A CLEAN COAL

2015-11-16  Underground coal gasification (UCG) is a potential clean coal technology which converts coal into combustible gas in situ. Typically, the syngas obtained from UCG is used for power generation via the steam turbine route. UCG offers many advantages over the conventional mining and gasification process. It is well proven technology in many

Underground Coal Gasification netl.doe.gov

2021-7-15  Underground Coal Gasification (UCG) takes advantage of the same chemical reactions of coal to produce product gases, as those occurring in conventional gasifier reactors. The main difference is that in UCG the underground coal seam itself becomes the reactor, so that the gasification of the coal takes place underground instead of in a manufactured gasification

Proc IMechE Part A: Mathematical modelling of in situ J

2017-2-10  Mathematical modelling of in situ combustion and gasification Greg Perkins Abstract The total worldwide resources of oil sands, heavy oil, oil shale and coal far exceed those of conventional light oil. In situ combustion and gasification are techniques that can potentially recover the energy from these unconventional hydro-carbon resources.

Coal gasification coal processing Britannica

Coal gasification, any process of converting coal into gas for use in illuminating and heating. The first illuminating gas was manufactured from coal in England in the late 18th century by the process of carbonization or destructive distillation, heating coal in the absence of